Shaun Osborn Da-Silva will lead the new telephone team which has appointed Sharon Hartshorne, Mark Gibson, Robert White and Tim Orr.
All four staff have experience in the mortgage industry and NatWest said the move showed its commitment to the intermediary market.
In addition the bank has recruited eight new members to its BDM support team and from next week will have teams dedicated to supporting specific brokers.
NatWest said this will help brokers to establish closer working relationships with specific individuals in the unit to help them with issues such as dealing with underwriters, application processing and completions.
Mark Bullard, head of sales at NatWest Intermediary Solutions, said: “We have continued to grow our intermediary facing team as part of our absolute commitment to the broker sector. We have been working really hard this year to recruit the right calibre people to enable us to offer an enhanced service to the increased number of intermediaries wanting to do business with us.
“We place great emphasis on getting our day-to-day relationships with brokers right and I believe that Shaun and his team, together with the new recruits to the BDM Support team, will embed this with the brokers they deal with.”